US20030048768A1 - Information device with wireless modules - Google Patents

Information device with wireless modules Download PDF

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Publication number
US20030048768A1
US20030048768A1 US10/101,757 US10175702A US2003048768A1 US 20030048768 A1 US20030048768 A1 US 20030048768A1 US 10175702 A US10175702 A US 10175702A US 2003048768 A1 US2003048768 A1 US 2003048768A1
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US
United States
Prior art keywords
wireless
wireless module
module
bluetooth
power
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Abandoned
Application number
US10/101,757
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English (en)
Inventor
Norimasa Nakamura
Toru Hanada
Takeshi Tajima
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toshiba Corp
Original Assignee
Toshiba Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Toshiba Corp filed Critical Toshiba Corp
Assigned to KABUSHIKI KAISHA TOSHIBA reassignment KABUSHIKI KAISHA TOSHIBA ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: TAJIMA, TAKESHI, HANADA, TORU, NAKAMURA, NORIMASA
Publication of US20030048768A1 publication Critical patent/US20030048768A1/en
Abandoned legal-status Critical Current

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
    • H04W16/14—Spectrum sharing arrangements between different networks
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/02—Terminal devices
    • H04W88/06—Terminal devices adapted for operation in multiple networks or having at least two operational modes, e.g. multi-mode terminals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/02—Power saving arrangements
    • H04W52/0209—Power saving arrangements in terminal devices
    • H04W52/0212—Power saving arrangements in terminal devices managed by the network, e.g. network or access point is master and terminal is slave
    • H04W52/0219—Power saving arrangements in terminal devices managed by the network, e.g. network or access point is master and terminal is slave where the power saving management affects multiple terminals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/02—Power saving arrangements
    • H04W52/0209—Power saving arrangements in terminal devices
    • H04W52/0251—Power saving arrangements in terminal devices using monitoring of local events, e.g. events related to user activity
    • H04W52/0254—Power saving arrangements in terminal devices using monitoring of local events, e.g. events related to user activity detecting a user operation or a tactile contact or a motion of the device
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W84/00—Network topologies
    • H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
    • H04W84/10—Small scale networks; Flat hierarchical networks
    • H04W84/12—WLAN [Wireless Local Area Networks]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W84/00—Network topologies
    • H04W84/18—Self-organising networks, e.g. ad-hoc networks or sensor networks
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Definitions

  • the present invention relates to an information device having two or more wireless modules and, more particularly, to use control of these wireless modules.
  • Personal computers having a plurality of wireless devices have recently been developed along with the development of the wireless communication technology.
  • An example of the personal computer has a Bluetooth module using a 2.4-GHz ISM (Industrial Scientific Medical) band and a wireless LAN module based on IEEE 802.11b.
  • This personal computer can perform wireless communication using the Bluetooth module and wireless communication using the wireless LAN module.
  • the user may select a wireless device at the application level.
  • a wireless device at the application level cannot prevent simultaneous use of a plurality of wireless device by user operation.
  • a personal computer which incorporates two wireless devices in a single housing cannot meet the wireless standards of some areas that inhibit a plurality of wireless devices from simultaneously operating. It is difficult for the user to determine the radio frequency band used in a wireless module incorporated in an information device. Further, the user must have advanced knowledge to switch and use a plurality of wireless modules.
  • the present invention has been made in consideration of the above situation, and has as its object to provide an information device which disenables unselected wireless devices by directly controlling hardware, and thus can prevent a plurality of wireless modules from simultaneously operating.
  • an information device comprising a first wireless module which performs wireless communication in accordance with a first communication way, a second wireless module which performs wireless communication in accordance with a second communication way, means which can select either one of the first and second wireless modules, and a control unit which, when the first wireless module is selected by the selection means, disenables wireless communication via the second wireless module and then enables the first wireless module, and when the second wireless module is selected, disenables wireless communication via the first wireless module and then enables the second wireless module.
  • an information device comprising a Bluetooth wireless module which performs wireless communication in accordance with a Bluetooth standard, a wireless LAN unit which performs wireless communication in accordance with an IEEE 802.1b standard, a first utility which determines a selected wireless module on the basis of a user instruction, and when the selected wireless module is determined as the Bluetooth wireless module, instructs to power off the wireless LAN unit, a second utility which instructs to turn on the Bluetooth wireless module on the basis of the instruction from the first utility that represents power off of the wireless LAN unit, a BIOS which instructs to power off the wireless LAN unit on the basis of the instruction from the first utility, and instructs to power on the Bluetooth wireless module on the basis of the instruction from the second utility, and a controller which controls to stop power supply to the wireless LAN unit on the basis of the instruction from the BIOS that represents power off of the wireless LAN unit, and which, upon receiving the instruction from the BIOS that represents power on of the Bluetooth wireless module, controls to supply power to the
  • FIG. 1 is a block diagram showing the hardware arrangement of a notebook type personal computer according to an embodiment of the present invention
  • FIG. 2 is a block diagram showing the relationship between an OS, a BIOS, and an EC;
  • FIG. 3 is a block diagram showing the relationship between the OS, the BIOS, and the EC;
  • FIG. 4 is a flow chart for explaining the operation of the notebook type personal computer according to the embodiment of the present invention.
  • FIG. 5 is a flow chart for explaining the operation of the notebook type personal computer according to the embodiment of the present invention.
  • FIG. 6 is a flow chart for explaining the operation of the notebook type personal computer according to the embodiment of the present invention.
  • FIG. 1 is a block diagram showing the hardware arrangement of the notebook type personal computer according to the embodiment of the present invention.
  • a BIOS 1 executes the basic control of the personal computer and serves as an interface with an application program.
  • the BIOS 1 is connected to an EC (Embedded Controller) 3 via an I2C bus 2 , and issues a command to the EC 3 to control it.
  • EC embedded Controller
  • the EC 3 is a one-chip microcomputer which interprets a command issued from the BIOS 1 and controls power supply and control signals to various devices within the personal computer.
  • the EC 3 controls a power controller 4 to control power supply to a Bluetooth module 5 .
  • the EC 3 controls the Bluetooth module 5 to electrically connect/disconnect a USB bus 8 between the Bluetooth module 5 and a USB controller 6 .
  • the EC 3 outputs a control signal to control a power controller 11 of a wireless LAN module 9 and control power supply to an RF controller 12 .
  • the control signal output from the EC 3 to the power controller 11 undergoes logical operation with a signal output from a digital controller 10 , and the logical operation result serves as a control signal to the power controller 11 .
  • the power controller 4 supplies a power of 3.3 V to the Bluetooth module 5 on the basis of a control signal from the EC 3 .
  • the Bluetooth module 5 communicates with the USB controller 6 via the USB bus 8 , and uses an antenna 7 to perform wireless communication based on the Bluetooth standard.
  • the Bluetooth module 5 has a function of stopping Bluetooth operation and radiation of wireless radio waves when it is electrically disconnected from the USB controller 6 .
  • the USB controller 6 is connected to the Bluetooth module 5 via the USB bus 8 , and controls the Bluetooth module 5 .
  • the wireless LAN module 9 is connected to the EC 3 , executes wireless communication based on IEEE 802.11b, and comprises the digital controller 10 , power controller 11 , and RF controller 12 .
  • the wireless LAN module 9 communicates with the system via a PCI bus 14 .
  • the digital controller 10 is connected to the PCI bus 14 , and controls the digital part of the wireless LAN module 9 and the RF controller 12 .
  • the digital controller 10 outputs a control signal to the power controller 11 .
  • the power controller 11 controls supply of a 3.3-V power to the RF controller 12 on the basis of control signals from the digital controller 10 and EC 3 .
  • the RF controller 12 controls the wireless part of the wireless LAN module 9 , and performs wireless communication using an antenna 13 on the basis of the IEEE 802.1b standard.
  • a bridge 15 is connected to the PCI bus 14 , to a CPU 16 via a CPU bus 19 , and to a memory 17 via a memory bus 18 .
  • the bridge 15 executes bus bridge control.
  • the CPU 16 controls the entire system.
  • the memory 17 stores a Bluetooth control driver 31 - 1 , Bluetooth power control utility 31 - 2 , and wireless device switching utility 31 - 3 included in an OS used in the personal computer of this embodiment.
  • the EC 3 is connected to a keyboard 21 serving as a user interface via a keyboard controller 20 .
  • the Bluetooth control driver 31 - 1 controls the Bluetooth module 5 .
  • the Bluetooth power control utility 31 - 2 controls power supply to the Bluetooth module 5 .
  • the wireless device switching utility 31 - 3 is a program for selecting a wireless device by using a prescribed key combination such as a hot key.
  • the wireless device switching utility 31 - 3 If a hot key which realizes a specific function is input by a predetermined key combination through the keyboard 21 and the BIOS detects the hot key (YES in S 0 ), the wireless device switching utility 31 - 3 is activated (S 1 ). The wireless device switching utility 31 - 3 checks whether Bluetooth is selected (S 2 ).
  • the wireless device switching utility 31 - 3 instructs the BIOS 1 to power off the wireless LAN (S 3 : see FIG. 3).
  • the BIOS 1 instructs the EC 3 to power off the wireless LAN (S 4 : see FIG. 3).
  • the EC 3 controls to stop power supply to the RF controller 12 via the power controller 11 (S 5 ). Then, radiation of radio waves from the wireless LAN module 9 stops.
  • the wireless device switching utility 31 - 3 notifies the Bluetooth power control utility 31 - 2 that Bluetooth has been selected (S 6 : see FIG. 2). Having received the notification from the wireless device switching utility 31 - 3 , the Bluetooth power control utility 31 - 2 instructs the BIOS 1 to power on the Bluetooth module 5 (S 7 : see FIG. 2).
  • the BIOS 1 instructs the EC 3 to power on the Bluetooth module 5 (S 8 : see FIG. 2). Then, the EC 3 controls the power controller 4 so as to supply power to the Bluetooth module 5 (S 9 ).
  • the USB controller 6 detects the Bluetooth module 5 , and the OS 31 detects that the wireless LAN module 9 has been connected to the system (S 10 ).
  • the Bluetooth control driver 31 - 1 is loaded to the OS 31 (S 11 ), and the flow shifts to processing in S 0 .
  • the wireless device switching utility 31 - 3 notifies the Bluetooth power control utility 31 - 2 that the wireless LAN has been selected (S 13 : see FIG. 2).
  • the Bluetooth power control utility 31 - 2 instructs the Bluetooth control driver 31 - 1 to perform use stop processing (S 14 : see FIG. 2).
  • the Bluetooth power control utility 31 - 2 instructs the BIOS 1 to power off the Bluetooth module 5 (Sl 5 ).
  • the BIOS 1 instructs the EC 3 to power off the Bluetooth module 5 (S 16 ).
  • the BIOS 1 controls the Bluetooth module 5 so as to electrically disconnect the Bluetooth module 5 and USB controller 6 (S 17 ).
  • the EC 3 controls the power controller 4 so as to stop power supply to the Bluetooth module 5 (S 18 ).
  • the OS 31 After power supply to the Bluetooth module 5 stops, the OS 31 detects that the Bluetooth module 5 has been disconnected from the system, and unloads the Bluetooth control driver 31 - 1 (S 19 ). Then, radiation of radio waves from the Bluetooth module 5 via the antenna 7 stops.
  • the wireless device switching utility 31 - 3 instructs the BIOS 1 to power on the wireless LAN (S 20 ).
  • the BIOS 1 instructs the EC 3 to power on the wireless LAN module 9 (S 21 ).
  • the EC 3 controls the power controller 11 to supply power to the RF controller 12 (S 22 ). Then, the wireless LAN module 9 radiates radio waves via the antenna 13 .
  • the notebook type personal computer can activate a wireless device switching utility by using a hot key which realizes a specific function with a key combination instructed by the user in advance, and can easily select a wireless device to be used. The interference between wireless devices using the same frequency can be prevented.
  • a notebook type personal computer which incorporates a plurality of wireless devices in a single housing can meet the wireless standards of some areas that inhibit a plurality of wireless devices from simultaneously operating.
  • the present invention can also be applied to another wireless communication standard of emitting radio waves, such as IEEE 802.11a or HomeRF.
  • the present invention can provide an information device which enables one wireless device, disenables another wireless device, and thus can meet the wireless standards of some areas that inhibit a plurality of wireless devices from simultaneously operating in a personal computer which incorporates a plurality of wireless devices in a single housing.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Small-Scale Networks (AREA)
  • Telephone Function (AREA)
  • Power Sources (AREA)
US10/101,757 2001-09-11 2002-03-21 Information device with wireless modules Abandoned US20030048768A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2001-275497 2001-09-11
JP2001275497A JP3600564B2 (ja) 2001-09-11 2001-09-11 複数の無線部を有する携帯型情報機器

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US20030048768A1 true US20030048768A1 (en) 2003-03-13

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US10/101,757 Abandoned US20030048768A1 (en) 2001-09-11 2002-03-21 Information device with wireless modules

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US (1) US20030048768A1 (zh)
JP (1) JP3600564B2 (zh)
KR (1) KR100478063B1 (zh)
CN (1) CN100397850C (zh)

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US20040117432A1 (en) * 2002-11-29 2004-06-17 Hideo Kitami Wireless LAN base station and communication control method at wireless LAN base station
US20060239417A1 (en) * 2005-04-25 2006-10-26 Sbc Knowledge Ventures L.P. POTS battery removal for IP/ATM-based network equipment
US20080031201A1 (en) * 2006-02-17 2008-02-07 Chun-Ching Lee Plug and Play Network Telephone Communication Apparatus
US20080119243A1 (en) * 2006-11-20 2008-05-22 Sanyo Electric Co., Ltd., Voice communication apparatus connectable to wireless lan, radio circuit activation method, and radio circuit activation program
US20080165829A1 (en) * 2007-01-05 2008-07-10 Lee Michael M Automatic power-off of bluetooth device from linked device
US20080192712A1 (en) * 2006-07-31 2008-08-14 Samsung Electronics Co., Ltd. Data processing apparatus and power control method thereof
US20080305839A1 (en) * 2002-08-12 2008-12-11 Broadcom Corporation Selective power management for a hand held host
US20090150704A1 (en) * 2007-12-11 2009-06-11 Motorola, Inc. Apparatus and method for enabling near field communication equipment in a portable communications device
US20110177780A1 (en) * 2010-01-15 2011-07-21 Kabushiki Kaisha Toshiba Wireless communication apparatus
EP1617571B1 (en) * 2003-04-17 2018-02-28 Fujitsu Limited Information processing apparatus having antenna switching function, communication device, antenna switching control device, antenna switching control program, and computer-readable recording medium containing the program

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US20080305839A1 (en) * 2002-08-12 2008-12-11 Broadcom Corporation Selective power management for a hand held host
US7356342B2 (en) * 2002-11-29 2008-04-08 Nec Infrontia Corporation Wireless LAN base station and communication control method at wireless LAN base station
US20040117432A1 (en) * 2002-11-29 2004-06-17 Hideo Kitami Wireless LAN base station and communication control method at wireless LAN base station
EP1617571B1 (en) * 2003-04-17 2018-02-28 Fujitsu Limited Information processing apparatus having antenna switching function, communication device, antenna switching control device, antenna switching control program, and computer-readable recording medium containing the program
US20060239417A1 (en) * 2005-04-25 2006-10-26 Sbc Knowledge Ventures L.P. POTS battery removal for IP/ATM-based network equipment
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US20080031201A1 (en) * 2006-02-17 2008-02-07 Chun-Ching Lee Plug and Play Network Telephone Communication Apparatus
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US20080119243A1 (en) * 2006-11-20 2008-05-22 Sanyo Electric Co., Ltd., Voice communication apparatus connectable to wireless lan, radio circuit activation method, and radio circuit activation program
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US20110177780A1 (en) * 2010-01-15 2011-07-21 Kabushiki Kaisha Toshiba Wireless communication apparatus

Also Published As

Publication number Publication date
JP3600564B2 (ja) 2004-12-15
CN100397850C (zh) 2008-06-25
CN1404279A (zh) 2003-03-19
KR20030022670A (ko) 2003-03-17
JP2003087269A (ja) 2003-03-20
KR100478063B1 (ko) 2005-03-23

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